Collaborative Filtering with User-Item Co-Autoregressive Models
This work addresses collaborative filtering for recommendation systems, offering a novel approach that integrates user and item information, but it appears incremental as it builds on existing neural methods.
The paper tackled the problem of collaborative filtering by proposing CF-UIcA, a neural co-autoregressive model that leverages structural correlations in both user and item domains, achieving state-of-the-art performance on MovieLens 1M and Netflix benchmarks for rating prediction and top-N recommendation.
Deep neural networks have shown promise in collaborative filtering (CF). However, existing neural approaches are either user-based or item-based, which cannot leverage all the underlying information explicitly. We propose CF-UIcA, a neural co-autoregressive model for CF tasks, which exploits the structural correlation in the domains of both users and items. The co-autoregression allows extra desired properties to be incorporated for different tasks. Furthermore, we develop an efficient stochastic learning algorithm to handle large scale datasets. We evaluate CF-UIcA on two popular benchmarks: MovieLens 1M and Netflix, and achieve state-of-the-art performance in both rating prediction and top-N recommendation tasks, which demonstrates the effectiveness of CF-UIcA.